近50年来淮河蚌埠以上流域降水时空变化特征分析
发布时间：2018-11-26 18:45
【摘要】：利用1956-2010年淮河蚌埠以上流域内112个雨量站的逐日降水资料,采用Mann-Kendall趋势分析和小波分析方法分析了蚌埠以上流域三级水资源分区近50 a降水的时空分布特征。结果表明:(1)蚌埠以上多年平均降雨存在北部低,南部高的空间分布不均匀性,4个分区中除王蚌区间南岸降雨有递增趋势外其他均为递减趋势,整个蚌埠以上降雨有递增趋势。(2)从时间上看,MK检验显示王家坝以上北岸降雨有显著递减趋势,王蚌区间南岸降雨有较显著递增趋势,Mann-Kendall趋势检验UF曲线显示王蚌区间南岸变化趋势在整个研究时间段不显著,2003年突变降雨对统计结果影响较大。(3)蚌埠以上研究区域及分区降雨有不同的周期,但有共同的6 a左右的振荡周期。整个研究区域降雨变化特征受分区影响。
[Abstract]:Based on the daily precipitation data of 112 rainfall stations in Bengbu basin of Huaihe River from 1956 to 2010, the temporal and spatial distribution characteristics of precipitation in the area of water resources in Bengbu basin were analyzed by using Mann-Kendall trend analysis and wavelet analysis method. The results are as follows: (1) the annual average rainfall in Bengbu is low in the north and high in the south, and the rainfall in the south of the four subzones is decreasing except for the south bank of the clam. The rainfall over Bengbu has an increasing trend. (2) from the point of view of time, MK test shows that the rainfall of the north bank above Wangjiaba has a significant decreasing trend, and that of the southern bank of the mussel section has a significant increasing trend. Mann-Kendall trend test UF curve showed that the variation trend of southern bank of mussel was not significant in the whole study period, and the sudden rainfall in 2003 had a great influence on the statistical results. (3) there were different periods of rainfall in the study area and subzone of Bengbu. But there is a common oscillation period of about 6 years. The characteristics of rainfall variation in the whole study area are affected by the area.
【作者单位】： 武汉大学水资源与水电工程科学国家重点实验室;水资源安全保障湖北省协同创新中心;
【基金】：国家“十二五”水专项淮河课题(2014ZX07204-006) 中小河流及无测站流域径流形成非线性机理及其模型的应用基础研究(41571028)
【分类号】：TV125
本文编号：2359321
[Abstract]:Based on the daily precipitation data of 112 rainfall stations in Bengbu basin of Huaihe River from 1956 to 2010, the temporal and spatial distribution characteristics of precipitation in the area of water resources in Bengbu basin were analyzed by using Mann-Kendall trend analysis and wavelet analysis method. The results are as follows: (1) the annual average rainfall in Bengbu is low in the north and high in the south, and the rainfall in the south of the four subzones is decreasing except for the south bank of the clam. The rainfall over Bengbu has an increasing trend. (2) from the point of view of time, MK test shows that the rainfall of the north bank above Wangjiaba has a significant decreasing trend, and that of the southern bank of the mussel section has a significant increasing trend. Mann-Kendall trend test UF curve showed that the variation trend of southern bank of mussel was not significant in the whole study period, and the sudden rainfall in 2003 had a great influence on the statistical results. (3) there were different periods of rainfall in the study area and subzone of Bengbu. But there is a common oscillation period of about 6 years. The characteristics of rainfall variation in the whole study area are affected by the area.
【作者单位】： 武汉大学水资源与水电工程科学国家重点实验室;水资源安全保障湖北省协同创新中心;
【基金】：国家“十二五”水专项淮河课题(2014ZX07204-006) 中小河流及无测站流域径流形成非线性机理及其模型的应用基础研究(41571028)
【分类号】：TV125
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